/* 去除常见标签默认的 margin 和 padding */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/* 设置网页统一的字体大小、行高、字体系列相关属性 */
body {
  font: 14px 'PingFangSC-Regul', 'Helvetica Neue', Helvetica, Arial, 'Microsoft Yahei', 'Hiragino Sans GB', 'Heiti SC', 'WenQuanYi Micro Hei', sans-serif;
  color: #333;
}
/* 去除列表默认样式 */
ul,
ol {
  list-style: none;
}
/* 去除默认的倾斜效果 */
em,
i {
  font-style: normal;
}
/* 去除a标签默认下划线，并设置默认文字颜色 */
a {
  text-decoration: none;
  color: #333;
}
/* 设置img的垂直对齐方式为居中对齐，去除img默认下间隙 */
img {
  width: 100%;
  display: block;
}
/* 去除input默认样式 */
input {
  border: none;
  outline: none;
  color: #333;
}
/* 省略号 */
.ellipsis-1 {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
.header {
  width: 100%;
  height: 13.3333vw;
  color: #000;
  font-weight: 700;
  line-height: 13.3333vw;
  font-size: 4.8vw;
  text-align: center;
}
.search {
  position: relative;
  height: 14.6667vw;
  display: flex;
  justify-content: center;
  align-items: center;
}
.search span {
  position: absolute;
  top: 3.6667vw;
  left: 21vw;
  font-size: 6vw;
}
.search input {
  width: 90%;
  height: 11.7333vw;
  font-size: 5vw;
  background-color: #f8f8f8;
  border-radius: 8vw;
  padding-left: 23.6667vw;
}
.nav {
  display: flex;
}
.nav .nav_left {
  background-color: #f8f8f8;
  overflow-y: auto;
  height: 149.3333vw;
  width: 25%;
}
.nav .nav_left::-webkit-scrollbar {
  display: none;
  width: 0!important;
  height: 0!important;
  -webkit-appearance: none;
  background: transparent;
}
.nav .nav_left .nav_left_title {
  display: block;
  height: 12.5333vw;
  line-height: 12.5333vw;
  text-align: center;
  font-size: 3.5333vw;
}
.nav .nav_left .active {
  color: red;
  background-color: #fff;
}
.nav .nav_right {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  overflow-y: auto;
  height: 149.3333vw;
  padding-bottom: 13.3333vw;
  width: 100%;
}
.nav .nav_right::-webkit-scrollbar {
  display: none;
  width: 0!important;
  height: 0!important;
  -webkit-appearance: none;
  background: transparent;
}
.nav .nav_right .nav_right_content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 29.3333vw;
  width: 33.3%;
}
.nav .nav_right .nav_right_content img {
  width: 19.7333vw;
  height: 19.7333vw;
}
